Impact Factor3.404

Journal:Optics Letters

Key Words:Wang Ruohui; Fraser Michael; Li Jiacheng; Qiao Xueguang; Wang Anbo;

Abstract:We present an integrated in-fiber coupler for excitation of whispering-gallery modes of a microsphere resonator. The coupler is simply fabricated by chemical etching away the holey area of a photonic crystal fiber, leaving a freestanding solid core enclosed in a silica housing. Light is coupled into a microsphere through the suspended core with a diameter of 2.1 mu m. Since the coupler itself performs as a Fabry-Perot interferometer, asymmetric Fano resonances can be observed in the mixed reflection spectrum. The silica housing of the coupler provides a robust mechanical support to the microsphere resonator. The new Fano resonance coupler shows great potential in biochemical sensing and optical switching applications. (C) 2015 Optical Society of America

Indexed by:Journal paper

Discipline:Engineering

First-Level Discipline:Other specialties in Optical Engineering

Document Type:J

Translation or Not:no

Date of Publication:2015-03-19

Included Journals:SCI